JS根据助记词实现Bitcoin基础操作（账户，签名）

May 20

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基础
常用库
完整代码

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JS根据助记词实现Bitcoin基础操作（账户，签名）

基础

比特币账户地址类型有四种

一般目前常用的是 BC1P 开头的

然后每个地址对应的私钥都不一样，签名数据自然也不一样

常用库

const bip39 = require('bip39');
const ecpair = require('ecpair');
const ecc = require('tiny-secp256k1');
const ECPair = ecpair.ECPairFactory(ecc);
const bitcoinMessage = require('bitcoinjs-message');
const { BIP32Factory } = require('bip32');
const bip32 = BIP32Factory(ecc);
const bitcoin = require('bitcoinjs-lib');
bitcoin.initEccLib(ecc);

完整代码

    // 生成种子
    const seed = bip39.mnemonicToSeedSync(mnemonic);
 
    // 使用种子生成 BIP32 根密钥
    const root = bip32.fromSeed(seed);
 
    // 获取派生路径上的密钥对，bc1p:"m/86'/0'/0'/0/0"
    const path = "m/86'/0'/0'/0/0";
    const child = root.derivePath(path);
    const keyPair = ECPair.fromPrivateKey(child.privateKey);
    // bc1p地址
    const { address } = bitcoin.payments.p2tr({ internalPubkey: keyPair.publicKey.slice(1, 33) });
    console.log('BTC P2TR Address:', address);
    //打印私钥和公钥
    const privateKey = keyPair.privateKey.toString('hex');
    const publicKey = keyPair.publicKey.toString('hex');
    console.log('Private Key:', privateKey);
    console.log('Public Key:', publicKey);
 
    // 签名消息
    const buffer = Buffer.from(keyPair.privateKey.toString('hex'), 'hex');
    const signature = bitcoinMessage.sign(evm_address, buffer, keyPair.compressed);
 
    signatureBase64 = signature.toString('base64')